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Nano Lett. 2011 Mar 9;11(3):919-26. doi: 10.1021/nl102369k. Epub 2010 Aug 12.

Multimetallic Au/FePt3 nanoparticles as highly durable electrocatalyst.

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  • 1Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.

Abstract

We report the design and synthesis of multimetallic Au/Pt-bimetallic nanoparticles as a highly durable electrocatalyst for the oxygen reduction reaction (ORR) in proton exchange membrane fuel cells. This system was first studied on well-defined Pt and FePt thin films deposited on a Au(111) surface, which has guided the development of novel synthetic routes toward shape-controlled Au nanoparticles coated with a Pt-bimetallic alloy. It has been demonstrated that these multimetallic Au/FePt(3) nanoparticles possess both the high catalytic activity of Pt-bimetallic alloys and the superior durability of the tailored morphology and composition profile, with mass-activity enhancement of more than 1 order of magnitude over Pt catalysts. The reported synergy between well-defined surfaces and nanoparticle synthesis offers a persuasive approach toward advanced functional nanomaterials.

PMID:
20704335
[PubMed]
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